---
title: "Calcium Ascorbate — $47K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/calcium-ascorbate"
last_updated: "2026-08-10T21:18:42.575Z"
locale: en
meta:
description: "Niche score 41/100 · $47K/yr market · 32K searches/yr · $13.17 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $47K/yr market · 32K searches/yr · $13.17 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Calcium Ascorbate — $47K/yr Amazon US Niche (2026) - Flapen"
---
# **calcium ascorbate**
**Skip it**
Brand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.
Market size 12Growth 35Conversion 92Competition 19Returns 100Price range 54Avg price 60Brand share 10Review moat 54Quality gap 24
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****11.2%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Good****$13.17**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****1,325.54**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****$5.60–$25.88**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+7.7%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****77%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$47K**
$47K/yr · 32K searches
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, calcium ascorbate is a $47K/yr Amazon United States market (32K searches/yr). The top 5 brands hold 96% of demand. Verdict: Skip it — 41/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **calcium ascorbate market data**
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **$53K–$66K**
- units × avg price
- **Conversion rate**
- **11.2%**
- **Avg BSR**
- **#984**
- **Page quality**
- **0%**
- **Prime**
- **92%**
- **Sponsored**
- **38%**
- **Out of stock**
- **1.0%**
- **Avg brand age**
- **117 months**
- **Avg seller age**
- **166 days**
## **Competition & brand share**
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**105**
**Top-5 brand share**
**96%**
Top 20: 100%
**Top-5 click share**
**77%**
Top 20: 100%
**Open market**
**2%**
- NOW Foods74% - BulkSupplements8% - Nutricost5% - Pure Encapsulations5% - INNERVISNUTRITION4% - Solgar2% - Open — no brand owns it (1 brand, 2%)
## **Demand**
Weekly Amazon search volume, last 17 weeks — +7.7% search growth over the last 90 days.
800600Apr '26Apr '26May '26May '26May '26Jun '26Jun '26Jul '26Jul '26
[**Open Trend **](https://flapen.com/research/us/health-household/calcium-ascorbate/trend)
## **Top calcium ascorbate search terms**
- **calcium ascorbate**11K/yr+2.5%7.6% conv. - **vitamin c calcium ascorbate**5K/yr+57.4%1.7% conv. - **now vitamin c 500mg**6K/yr+2.5%22.0% conv. - **calcium ascorbate vitamin c**5K/yr-2.9%6.4% conv. - **now c-500**2K/yr+6.3%31.1% conv. - **calcium ascorbate powder**3K/yr-16.4%10.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/calcium-ascorbate/search-terms)
## **Top calcium ascorbate products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$5K20%$9K30%$14K40%$19K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NOW Foods Supplements Vitamin C-500 Calcium Ascorbate Antioxidant Protection* 250 Veg Capsules**NOW Foods**$13.69**4.8★1,397 rev](https://www.amazon.com/dp/B000VRXD1K) [2**NOW Supplements Vitamin C-500 with Rose Hips Antioxidant Protection* 250 Tablets**NOW Foods**$10.09**4.8★6,145 rev](https://www.amazon.com/dp/B0013H7JOY) [3**NOW Foods Supplements Calcium Ascorbate Powder Buffered Antioxidant Protection* 8-Ounce**NOW Foods**$10.93**4.7★386 rev](https://www.amazon.com/dp/B000I4AIUA) [4**BulkSupplements.com Calcium Ascorbate Powder - Buffered Vitamin C Supplement Calcium Powder - Vegan & Gluten Free 1g per Serving 500g (1.1 lbs) (Pack of 1)**BulkSupplements**$19.52**4.6★335 rev](https://www.amazon.com/dp/B00GWM89NK) [5**Nutricost Calcium Ascorbate Powder 250G (Unflavored) 250 Servings GMO-Free**Nutricost**$14.41**4.0★43 rev](https://www.amazon.com/dp/B0D2432VCF)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**C-Salts Pure Calcium Ascorbate Vitamin C Powder (8 oz)**C-Salts**$11.97**34 rev11mo ago](https://www.amazon.com/dp/B0FNS1VFBP) [**Nutricost Calcium Ascorbate Powder 250G (Unflavored) 250 Servings GMO-Free**Nutricost**$14.41**43 rev2y ago](https://www.amazon.com/dp/B0D2432VCF) [**Buffered Vitamin C 1500mg Non-Acidic Stomach Friendly Calcium Ascorbate Capsules for Immune Support Gentle on Digestive System - 150 Veggie Caps by Innervis Nutrition**INNERVISNUTRITION**$16.21**37 rev2y ago](https://www.amazon.com/dp/B0D2RYJFVH) [**Pure Encapsulations Buffered Ascorbic Acid Capsules | Vitamin C for Sensitive Individuals* | 90 Capsules**Pure Encapsulations**$25.88**745 rev9y ago](https://www.amazon.com/dp/B07FYVWLXC) [**BulkSupplements.com Calcium Ascorbate Powder - Buffered Vitamin C Supplement Calcium Powder - Vegan & Gluten Free 1g per Serving 500g (1.1 lbs) (Pack of 1)**BulkSupplements**$19.52**335 rev12y ago](https://www.amazon.com/dp/B00GWM89NK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**C-Salts Pure Calcium Ascorbate Vitamin C Powder (8 oz)**C-Salts**$11.97**4.2★**▲ 68%**](https://www.amazon.com/dp/B0FNS1VFBP) [**BulkSupplements.com Calcium Ascorbate Powder - Buffered Vitamin C Supplement Calcium Powder - Vegan & Gluten Free 1g per Serving 500g (1.1 lbs) (Pack of 1)**BulkSupplements**$19.52**4.6★**▲ 22%**](https://www.amazon.com/dp/B00GWM89NK) [**NOW Supplements Vitamin C-500 Antioxidant Protection* Cherry Flavor 100 Chewable Lozenges**NOW Foods**$9.80**4.7★**▲ 20%**](https://www.amazon.com/dp/B000MGWG22) [**NOW Foods Supplements Vitamin C-500 Calcium Ascorbate Antioxidant Protection* 250 Veg Capsules**NOW Foods**$13.69**4.8★**▲ 18%**](https://www.amazon.com/dp/B000VRXD1K) [**Pure Encapsulations Buffered Ascorbic Acid Capsules | Vitamin C for Sensitive Individuals* | 90 Capsules**Pure Encapsulations**$25.88**4.8★**— 9%**](https://www.amazon.com/dp/B07FYVWLXC)
**~~View all trending →~~**
## **What buyers say about calcium ascorbate**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“QUALITY is EXCELLENT”*
**Vitamin**14%
*“Good supplements”*
**Value For Money**14%
*“Good price”*
**Acid Regulator/Stomach Ache Relief**12%
*“No Stomach Upset”*
**Taste-Overall**5%
*“It has such a great taste--you can taste the acerola cherries”*
**Ease Of Chewing/Swallowing**4%
*“Very large, I bite in half and then chew”*
**Ease Of Use**4%
*“Easy and good”*
**Cold Relief**3%
*“knock a cold out”*
**Natural Ingredients**3%
*“Pur brand most natural”*
**Flavor**3%
*“Vitamin C. Very good flavor”*
### **What buyers complain about **
**Taste-Overall**29%
*“It tastes terrible”*
**Solubility**27%
*“Does Not Dissolve”*
**Functionality-Overall**11%
*“Inactive does nothing”*
**Ease Of Chewing/Swallowing**6%
*“This stuff is sooooo hard to drink”*
**Regulates Digestion**6%
*“This Vitamin C product caused severe bloating”*
**Calcium**4%
*“Note:ANY calcium ascorbate product can cause a blood pressure drop in some people”*
**Hard Feel**2%
*“The capsules are too hard”*
### **Top return reasons **
**Ease Of Chewing/Swallowing**100%
## **Common questions**
- **Is calcium ascorbate profitable to sell on Amazon United States?**
- The niche generates $47K/yr across 13 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +7.7%. Flapen's verdict: Skip it (41/100).
- **How competitive is the calcium ascorbate niche?**
- 7 brands and 105 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in calcium ascorbate?**
- Top complaints mined from reviews: Taste-Overall, Solubility, Functionality-Overall. The return rate is 0.0%.
- **What does it cost to enter the calcium ascorbate niche?**
- Listings span $5.60–$25.88; the average listing price is $13.17 (sweet spot $15–$100). The average incumbent carries 1,326 reviews — the moat a new listing must climb.
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